This is a few changes to the shaders in Race 07/Evo. Assume it will work with all versions!But has only been tested with steam version of Race 07/ Evo
It is not upgraded shaders. No new functions has been added only bug fixes and some shaders upgraded to dx9.
Unzip the folder 'Shaders' into \Steam\Steamaps\Race 07\Shaders
The folder 'OriginalShader' got the original shaders in case you are not happy with the new ones.
Text file included in the zip folder, describing the changes made

There is a text file in the zip folder describing the changes.
Visual it will not be a huge change maybe a clear better 'reflected' light due to the dx9 calls are more detailed than the equivalent dx8 shader.
Performance vise is is also just a small effect depending on your hardware.
On an older gaming laptop it clearly runs more smoothly while on my current desktop the game is very smooth with or with this.
Unfortunately it did not make me a faster driver